Full Hydrogen Bell Annealing Furnace - Efficient Heat Treatment from China Suppliers & Factory
Product Introduction
Furnace-to-Cover Ratio
🔥
1.6 : 1
The configuration ratio between the furnace and the heating cover is reduced. The traditional HNX furnace is 2:1 — two HNX furnaces per one heating cover. Thanks to the extremely short cooling time of the all-hydrogen furnace, the ratio is reduced to 1.6:1, saving floor area and reducing investment.
Production Increase
📈
40%
The use of 100% hydrogen as a protective gas, corrugated inner casing, large gas flow and high-speed burner, combined gas/water cooling and strong convection can increase production by 30% to 40%.
Sealing Precision
🛡️
PPm Level
No oxidation phenomenon. Due to the realization of reliable two PPm level (millionth) sealing, sufficient washing time, and advanced control means, the annealed steel coil will show no oxidation color.
Frequently Asked Questions
Q
What does the 1.6:1 furnace-to-heating-cover ratio mean compared to traditional HNX furnaces?
The traditional HNX furnace uses a 2:1 ratio, meaning two furnaces share one heating cover. The all-hydrogen furnace achieves a reduced 1.6:1 ratio due to its extremely short cooling time, which means fewer heating covers are required per furnace — saving floor space and lowering overall capital investment.
Q
Why is 100% hydrogen used as a protective gas in this furnace system?
100% hydrogen is used as a protective gas because it provides superior thermal conductivity, enables stronger convection, and effectively prevents oxidation of the steel coil surface during the annealing process, resulting in a higher-quality finished product.
Q
How does the all-hydrogen furnace achieve a 30%–40% increase in production capacity?
The productivity increase is achieved through a combination of 100% hydrogen protective gas, a corrugated inner casing design, large gas flow, high-speed burners, and a combined gas/water cooling system with strong convection — all of which significantly reduce cycle times.
Q
What is the significance of PPm-level sealing in the all-hydrogen furnace?
PPm-level (parts per million) sealing means the furnace achieves an extremely airtight seal, virtually eliminating any risk of atmospheric contamination. This ensures no oxygen enters the annealing environment, which prevents oxidation discoloration on the steel coil surface.
Q
Will the annealed steel coil have any surface oxidation or discoloration after processing?
No. Thanks to the reliable two PPm-level sealing, sufficient gas washing time during the process, and advanced control systems, annealed steel coils processed in this furnace will not exhibit any oxidation color or surface defects.
Q
What industries or applications benefit most from this all-hydrogen furnace technology?
This all-hydrogen furnace technology is ideal for the steel processing industry, particularly for manufacturers requiring high-quality annealed steel coils with clean surfaces, tight dimensional tolerances, and high throughput — such as automotive, appliance, and precision steel strip production.